Eamonn Walker stars as Battalion Chief Wallace Boden, a fireman's fireman who is confronted by important personal decisions, in NBC's drama "Chicago Fire."

Walker is a talented, compelling performer known for his depth, integrity and ability to give life to the most layered of characters. He credits Sidney Poitier's performance in "In the Heat of the Night" as the inspiration that led him to become an actor.

Born in London, he is perhaps best-known in the United States for his portrayal of Kareem Said, the Muslim leader on the critically-acclaimed series "Oz." His work on this show earned him a Golden Satellite nomination and a Cable Ace Award for Best Actor in a Dramatic Series.

His numerous television credits include the NBC series "Kings" where he garnered rave reviews, the Jerry Bruckheimer series "Justice," "The Whole Truth," also for Bruckheimer, "The Governor," and the BBC's "Bonekickers" and "Moses Jones." Other credits include the telefilms "Whitewash: The Clarence Brantley Story" written by Abby Mann and "Homicide: Life Everlasting," as well as the mini-series "Supply and Demand" and a special arc on the critically-acclaimed series "Lights Out."

On the big screen, Walker recently completed a starring role opposite Melissa George in the suspenseful Scottish feature "A Lonely Place to Die" and co-starred in the psychological thriller "Legacy," opposite Idris Elba. Walker received stand-out notices for his performance as Howlin Wolf in "Cadillac Records," opposite Adrien Brody, Jeffrey Wright, Mos Def and Beyonce Knowles. He also has given memorable performances in such films as "The Messenger" opposite Ben Foster, Woody Harrelson, and Samantha Morton; "Lord of War," opposite Nicholas Cage and Ethan Hawke; "Duma," Carroll Ballard's critically-acclaimed film; "Tears of the Sun," opposite Bruce Willis; Laurence Fishburne's "Once in the Life"; and M. Night Shamaylan's "Unbreakable."

In 2005, Walker made his Broadway debut as Marc Antony alongside Denzel Washington and Colm Feore in "Julius Caesar" at the Belasco Theatre. He recently performed to standing-room- only audiences and great critical acclaim as the first Black actor to portray Othello at the historic Old Globe Theatre in London.

Walker founded the Flipside Theatre Company in London and co-starred in their production of "Danny and the Deep Blue Sea." He also appeared in plays on such venerable stages as the Citizens Theatre, the Royal Exchange and the Hampstead Theatre.

Walker resides in both Los Angeles and London.

Eigenberg stars as Christopher Herrmann, a seasoned firefighter and salt-of-the-earth family man in NBC's drama "Chicago Fire."

Eigenberg is known to film and television audiences for his role as Steve Brady, the good-hearted husband and quintessential New York bar owner in the box office hit and Emmy-winning series "Sex and the City."

Among his film credits are "See You in September," "The Trouble with Romance," "Driftwood," "Love, Ludlow," "Around the Bend," "Garfield," "The Mothman Prophecies" and "A Perfect Murder."

Eigenberg was a regular on "The Beat," which was executive produced by Tom Fontana and Barry Levinson, and he had recurring roles on series including "Justified," "Third Watch," "The Practice" and "Ed." Additionally, he has guest-starred on such shows as "Criminal Minds," "N.C.I.S.," "Castle," "Private Practice," "Cold Case," "ER," "Monk" and "Close to Home."

A member of the Ensemble Studio Theatre in New York, Eigenberg has performed in numerous off-Broadway plays. On Broadway, he received his break in 1990, playing a hustler in the original cast of John Guare's "Six Degrees of Separation," directed by Jerry Zaks at Lincoln Center. He also starred in the original cast of "Take Me Out," directed by Joe Mantello, which was awarded the Tony, Drama Desk, Outer Critics, Drama League and New York Critics Awards for Best Play.

Eigenberg served in the United States Marine Corps for three years. He is married and lives in Los Angeles with his wife, Chrysti, and three-year-old son, Louie.

Monica Raymund stars as Gabriella Dawson, the fast-thinking, fearless paramedic who along with her partner faces harrowing situations, in NBC's drama "Chicago Fire."

A graduate of The Juilliard School, she is the recipient of the John Houseman Award for her commitment and dedication. Immediately following her graduation, she went on to star opposite Tim Roth for three seasons in "Lie to Me." During this time, she also became a founding member of The Mechanical Theatre Group, has been on faculty and co-head of the Communications Department at The Heifetz Institute, served as faculty for The Broadway Theatre Project, currently serves on the faculty of the Performing Arts Project and is a board member for The Hollywood Arts Organization in Los Angeles.

Her credits include a supporting role in the feature "Arbitrage" opposite Richard Gere, a starring role in the Sundance Lab musical production of "Like Water for Chocolate," and a recurring role in "The Good Wife."

Raymund is married to writer and director Neil Patrick Stewart, and she resides in both Los Angeles and New York City.

Teri Reeves stars as Hallie Casey, a hospital resident who is in the midst of a separation from Lieutenant Matthew Casey (Jesse Spencer), in NBC's drama "Chicago Fire."

Reeves can be seen starring as KJ Jameson in Hulu's first originally-scripted show "Battleground." Recurring television credits include "General Hospital" and "Three Rivers," along with guest-starring roles on "Rules of Engagement," "The Forgotten," "Undercovers," "Medium" and "Numbers."

Reeves holds a Masters of Fine Arts degree in theater from the University of California at San Diego and is also a producing member of the Ovation Award-winning Chalk Repertory Theatre, where she frequently appears in stage productions.

Among her many hobbies, Reeves practices yoga regularly and holds a first-degree blue belt in Brazilian Jiu- Jitsu, for which she trains most every day. Originally a California Bay Area native, she now lives in Los Angeles with her husband, Jon, and dog, Willow.

Taylor Kinney stars as Kelly Severide, a brash Lieutenant with an unflappable veneer who is fighting his own demons, in NBC's drama "Chicago Fire."

On television, Kinney has a variety of credits including a series regular role in NBC's "Trauma" and the recurring role of Mason Lockwood on "The Vampire Diaries." He starred in last season's Michael Patrick King pilot, "A Mann's World" opposite Don Johnson, and he has appeared on such shows as "Breakout Kings," "Castle," "Shameless," "Rizzoli & Isles," "Bones" and "CSI: NY." Kinney was featured in the telefilm "Five," a project produced by Jennifer Aniston, Demi Moore and Alicia Keyes and was seen in the web series "Dating Rules From My Future Self."

Upcoming big screen credits include Kathryn Bigelow's "Zero Dark Thirty," the Marty Papazian-directed independent feature "Least Among Saints," and the short film "Prodigal" with Kenneth Branaugh.

Born in Lancaster, Pa., Kinney is an experienced surfer, and he currently resides in Los Angeles.

Lauren German stars as Leslie Shay, the skilled, dedicated paramedic who along with her partner faces harrowing situations, in NBC's drama "Chicago Fire."

Born and raised in Orange County, Calif., German grew up with a passion for theater and acting. German attended The School of Theater at the Orange County High School of the Arts and went on to study the craft at the University of Southern California. In her first work on stage, German played the lead roles in the GLACT productions of both "Peter Pan" and "Oliver."

German's breakout role was in the 2002 hit "A Walk to Remember," directed by Adam Shankman, where she starred alongside Mandy Moore and Shane West. She followed this up with Gale Kate Jr.'s "A Midsummer Night's Rave," which was an adaptation of William Shakespeare's play. Her other big screen credits include: the post-apocalyptic thriller "The Divide"; "The Dark Country" alongside the film's director and co-star, Thomas Jane; Eli Roth's "Hostel II," where she played the female lead and also performed her own stunts; the remake of the famous horror film "The Texas Chainsaw Massacre"; Daryl Goldberg's independent comedy "Made for Each Other"; Rodger Grossman's biopic "What We Do Is Secret," chronicling punk legend Darby Crash, where she worked opposite Shane West and Bijou Philips; and "Spin," a romantic comedy written and directed by Henry Pincus.

Her television credits include series regular roles on "Hawaii Five-O" and "Happy Town." She has also guest starred in "Memphis Beat," "Human Target," "7th Heaven" and "Sex, Love and Secrets."

German currently resides in Los Angeles.

Jesse Spencer stars as Matthew Casey, a strong intuitive Lieutenant who is still coming to grips with the loss of one of his men and grappling with relationship problems, in NBC's drama "Chicago Fire."

An Australia native, Spencer made his American television debut in the critically-acclaimed series "House," playing Dr. Robert Chase opposite Hugh Laurie for all of the show's eight seasons until the series ended in May 2012.

Spencer's film credits include a starring role in "Uptown Girls" with Brittany Murphy, the biopic "Swimming Upstream" with Geoffrey Rush and Judy Davis, as well as Spike Lee's independent feature "Girl Is in Trouble."

He has worked extensively in the U.K. and Australia, both in television and theater. He starred in the acclaimed BBC drama "Death in Holy Orders" and has had starring roles in the BBC adaptation of "Lorna Doone" and Hallmark's "Stranded." He began his career starring in the long-running Australian soap, "Neighbours." Lead roles in U.K. theatre have included playing Terrence in "The Modernists," directed by Robert Delamare at the Sheffield Crucible Theatre, and the title role in "Peter Pan" at the White Rock Theatre.

Spencer currently resides in Los Angeles.

Charlie Barnett stars as Peter Mills, a young new academy graduate who follows a long line of multi- generational firefighters, in NBC's drama "Chicago Fire."

A graduate of The Juilliard School, he began performing in his hometown of Sarasota, Fla., at the age of 7 in opera and musical theatre productions.

On the big screen, Barnett has a supporting role in "Men in Black 3" with Will Smith and Josh Brolin. Other features include "Gayby," which premiered this year at the South by Southwest Film Festival, "The Happy Sad," a tangled love story, and "Private Romeo," a modern take on Romeo and Juliet.

On television, he has guest-starred on NBC's "Law & Order: SVU" and "Law & Order: CI."

Barnett, who was raised on a sailboat for most of his young life, still enjoys sailing as well as classic cars. He is also a strong advocate for volunteer work.

He is single and resides in Los Angeles – though his heart is in New York.